Replicators may be common aboard starships, but they may not be in the average household just like how transporter systems may not be, IMO.

Of interest here might be that in "The Maquis", the Cardassians "poisoned the wells" of the colonists by reprogramming their "public" food replicators.

Now, this may be the far frontier, which we know is teeming with luddites. But that aside, the existence of public replicators may or may not indicate that private ones are rare. Or then it merely indicates that Cardassian saboteurs can access public systems more easily than private ones. Certainly it would seem odd that the colonists would have to spell out to each other that these replicators are "public" if there are no other kind.

This would tend to undermine the colonists' insistence that only the core world people can be saints in paradise - the benefits of a replicator society would still seem to be available to the frontier settlements.

Onscreen material seems to suggest that San Francisco is the location of the main campus

Indeed - but there's no real evidence for the existence of another campus as such. Possible training facilities such as flight ranges, yes; possible dedicated entry exam facilities, yes (the one from "Coming of Age" seemed to be quite an investment in infrastructure, as it featured a somewhat extensive physical simulator, probably pre-holodeck era). But other clusters of lecture halls and dormitories? Not quite mentioned.